Compare 201220 vs 201221
| Property | 201220 | 201221 |
|---|---|---|
| Type | composite number | semiprime |
| Unique factors | 3 | 2 |
| Total factors | 4 | 2 |
| Prime factorization | 22 × 51 × 100611 | 311 × 64911 |
| Prime factorization | 2 × 2 × 5 × 10061 | 31 × 6491 |
| Divisors count | 12 | 4 |
| Divisors | 1, 2, 4, 5, 10, 20, 10061, 20122, 40244, 50305, 100610, 201220 | 1, 31, 6491, 201221 |
| Number of properties | 0 | 1 |
| Semiprimes | 45508th | |
| Roman numberals | ||
| Base 2 | 1100010010000001002 | 1100010010000001012 |
| Base 3 | 1010200001213 | 1010200001223 |
| Base 4 | 3010200104 | 3010200114 |
| Base 5 | 224143405 | 224143415 |
| Base 6 | 41513246 | 41513256 |
| Base 7 | 14654357 | 14654367 |
| Base 8 | 6110048 | 6110058 |
| Base 9 | 3360179 | 3360189 |
| Base 10 | 20122010 | 20122110 |
| Base 11 | 1281a811 | 1281a911 |
| Base 12 | 9854412 | 9854512 |
| Base 13 | 7078613 | 7078713 |
| Base 14 | 5348c14 | 5348d14 |
| Base 15 | 3e94a15 | 3e94b15 |
| Base 16 | 3120416 | 3120516 |